Elevator-door-locking device



'.l. D. scHAKEL ELEVATOR DOOR 'LOCKING DEVICE Filed Ndv. 6.l 1922 s sheets-sheet 1 n Z7 f W55 0 i? f o ff v Z7 jg 2% /f ZZ 'l'f f4 ,0 HH

| l if l g Y l g l l l l l 4 'l a l l l g J. D. SCHAKEL ELE'vAToR DooR LOCKING DEVICE 3 Sheets-Sheet 2 Fied Nov-. e, 1922 Feb. 19, 1924; 1,484,278

' J.' D, scHAKEl. ELEvA'roR nook LQCKING DEVICE Filed Nv.- 1922 s sheets-sheet S Patented Feb. 19, w24.

UNET '1.48am Ic.,A

TENA.'

JACOB D. sCIIA'KELfCI CIIICi-ieo,` IIJLIIvoIs,v .assIGnoIt fro iiLEva'roR COMPANY or AMERICA, or CHICAGO, ILLINOIS, a CORPORATION or ILLINOIS.

ELEvAroR-DOoIt-Locarne' nevica v Application filed November To. all whom imagl concern: Y.

Cil

Be it knownthat I, JACOB Al). SCHAKEL, a

citizen of the United States, residing at Chi;v

cago, in the county of Cook and'State of Illinois, have invented aA certa-in vnew and useful Improvement in ElevatorLDoor'Iiock# ing Devices, of which the following is a full, clear, concise, and exact description, reference being h'ad to the accompanying draw@ ings, forming a part of this specication,

My invention rela-tes ytof/an elevator door locking device that'is particularly adapted for usewith electrically operated elevators.

Itis a purpose of the invention to provide an elevator door locking device which'will keep'the door lockredat all times except when the elevator is opposite thefloor at which the door is located and the elevator is stopped. It has been found that where automatic elevators are used, it is quite often the case that.

the person who has pushed the button to bring the elevator to the floor at whichl the person is located does not receive thel eleva# tor, because a person atanother licor that the elevator must pass, by manipulatingthe lock properly, can open the door and break the operating circuit of the elevator. `This is due to the fact that all automatic electric elevators are provided with means for breaking the operating circuit when any door is open.

It is the purpose ofthe invention to pre vent the person who is not entitled to the elevator to stop the same in this manner, and in order to accomplish this purpose a device is provided which will unlockthe door only ,when the operating current has been shut ott' by the control'device, and the car is opposite al floor. In the form shown the means for accomplishing this purpose comprises a lever pivoted intermediate the ends thereof upon a suitable sup-port,said y lever having al shoe thereon which is adapted to engage with a roller that acts to move a locking member out vof locking position. The shoe is normally heldin a position so that it will not contact with the rollers when the operating current is on.r y

It is a further purpose of the invention to provide means for holding said shoe in a' position so as to not engage the lock operating rollers which comprise a solenoid which is connected in series in the operating circuit, so that when the operating current is on the solenoid willy hold the lever in 6,1322.vv Serial No. $9,374.

Such afpositionV to havev the shoe out :of

roller contacting position. The rollers are,

of course, located insuch positions in the shaft as to be engaged by the shoe which is carried bythe elevator vwhen theelevator is substantially aligned with the floor adjacent which the roller is located. y 'p n It is still a further purpose. of theinvention to provide a Vdoor locking means which is mechanical in operation, and which l'is made up of but few simple moving parts, and inl which the unlocking device Vis held in inoperative position by electrical means in circuit vwith theIr operating circuit for the elevatorcar. I. l

Otherc-bjects and'advantages'of the in-Y vention will appear 'as the-description of thel accompanying drawingsy proceeds.. ever, I desire to have it distinctly understood that I do not intend to limit myselfk to the exact details shown or described, but that I intend to include as part ofmy invention all such obvious changes and modifications of parts as would Occur to 'a person skilled'in this art and as would fall within the scope of the claims. f

In the drawings: n Fig. l is a view in side elev'ationrofva portion of the elevator framework showing my improved door unlocking device'mounted thereon and showing one of the doorunlocking devices cooperating therewith locat-. ed at one of the floors;

Fig. 2 isa fragmentary face wView of an elevator door showing my improved llock applied thereto; i

Fig. 3 is a -side elevation of the door un locking device carried by the elevator; Y

Fig. l is a bottom plan view thereof;

Fig. 5 is a. diagram of the circuit :connections used in the door locking system;

Fig. 6 is a face view of a portion vcfa door showing a. slightly different form'of locking device applied thereto; and

Fig. 7 is an end view of the device shown y in Fig. 6. I

y vpin 18, upony which swing 'as a pivot. A Vvided with Ya pair of spaced arms 20 andy betweenl which vis mounted the shaft or pivot a lever 19 is.` adapted to The member 19 is pro- 21,-between which is mounted a shoe 22, said shoe having the cam-like curved end portions 23 so as to assurethatthe rollers 24 having a` rubber facing or tread 25 engage always lwith the same side thereof.Y Said rolle-rs 24 are mounted edgacent each of the floors at which the elet/atene stopsv and aire each mounted on a shaft 26 which-is journaledin a lever 27 pivotallywmounted at 28' one base plate 29, which base plate is securedI to any suitable securing means, such as they members 3(2),to someportion of the elevator shaft or hatch. The plate 29 is provided with an apertured eafr throughr the end thereof for receiving a eXible mem-- ber, such as a chain 36. rfhe chain 36 provided with a turn buckle 37 for adju-sting the length thereof, and is connected at thev end thereof, opposite the end enga-ging with the vopening 35, with an eye in the end of the member 38 mounted on the shaft 39', said'shaft 39, referring now to Fig. 2,

i being mounted in suitable brackets 40 which are mounted in any suitable manner: in the hatch, said shaft 39 having a col-lar 41 thereon which is provided with a finger or latching member 42 which isadapted to engage in a latch .plate 43 provided on Vthe doorv 44, the door shown being a sliding door, and it will be obvious'that when the member 42 is seated in the recess 45k in the plate 43, the door will be held effectively against movement', the member 42 acting as astopl to prevent such movement. The member 42 is lnoimially held in position in the notch or recess 45 by means of the torsion spring 46 havingY one end thereof mounted in the collar 47V keyed to the Vshaft 39 and the f other end thereof mounted inthe bearing member 40.

Suitable collars 48 are provided to ipre'- vent endwise movementY of the shaft 319'. It will be seen that if the shoe 22 engages with the roller'25, the member 27 will be thrown to the right in Fig. 1, and the fiere ible member V36 will be pulled so as to swing 1 the armV 38m counterclockwise direction in- Fig. 1, thus disengagin-g they stopv member 42 from the plate 43.

Suitable means has been provided whereby such an action will only take place when the operating current has-A been shut olf.

Said means comprises a solenoid 49 mounted The screw 3'2is adapted on the base 14 and havingan armature 50 which is pivotal-ly] connected with an eye 5-1 on the rod 52 connected with a rod 53 by means of a turn buckle 54 for properly adjusting the lengtlrof the link comprising the members 52, 53 andv 54, said rod 53 being provided with an eye 55 mounted on the pivot pin 56 extending across between the arms 57 of the bifurcated portion ofthe rearwardly extending arm l58 of the lever 19, said arm 58 having secured. to the eX- treme end portion thereof the tension spring 59, the other endA of which is connected with an ear 60 provided on a threaded member 61 passing through an apertured ear62 in the base 14, said member 61 having nutsy 63 threaded thereon for adjusting andilock ing the member 61 so as to obtain any desired tension on the spring' 59.

The solenoid 49 inthe form shownin Fig. 4 operates so as to turn-thelever about the pivot 18 ina clockwise direction, that is, the armature 50is movedv outwardly so 'as to push on the lever arm 58. Y Accordingly when the solenoid 39 has current passing therethrough, the shoe 22 is held away from the roller 24 as shown in dotted lines in` Fig. 4; i-owever, if there isno current passing through the solenoid when the oper-- ati-ngl current' is' shut off, thev spring 59 movesV the lever to the full line position shown in Fig'. 4, so as to cuase the shoe 22 to- Contact with the roller' 24 to move the stop member to door locking position. This action takes place substantially instantaneously due to the fact that the spring 59 is placed under tension when the solenoi-d is operated to hold the lever in such a postion that the shoe is` out of the path of the rollers. Y Y

rlhe lever arm'y 20 is provided witlra lug 64which= is adapted to engagel with a stop pin 65 meunted in the webr 66 and adjustable therein, said stop pin` limiting the movement of the lever' 2`in one direction.

In order to pro-vide for substinitiallyl a noiseless operation of the device, a compres- I sion spring 67 is mounted between the. lug 68 on the lever 20V andv the socket member 69 provided on the bolt 79' adjustably mountedy inthe web 66 and held yin adjustedv position by the" nut 71. I

Fig. 5 shows the arrangement of fthe electrical'connections diagrammatically; In'

said? figure the numeral: 72: represents a startingv switch interposed between onel of the lineY wires 73" and the motor 74 that operates the elevator carl interposed be tween thefotherV line ,wi-re- 7 5^a^nd said motor is the solenoid 49fwhieh operates'the arma.- ture 51- connected with the lever 2O having a shoeI 22 thereon,as previously described. It' wil'lbe seen that' when theswitch V72 is in the position shown in Fig. -5-,V there will' be no current flowing through the motorM 22 will be in position to engage with thev roller 24,`while if the switch 72 is in engagement with any one of the contact points 76, 77 or 78, the circuit will be closed, the solenoid 49 will be energized and theshoe 22 will be withdrawn so that the same will pass by the various rollers 24 without en-v gaging with the same. VAs the shoecdoes not engage with the rollers, except when operation of the lock is to take place, there will be no noise due to theshoe passing into and out of engagement with the rollers as the car moves up and down the shaft. `While an ordinary hand operated switch is shown in F ig. 5, it will be understood that tlie same principle will apply to an automatic switching device, such as pro` vided in automatic elevators. In fact the construction is particularly adapted for use with automatic'elevators and the hand operated switch has been shown merely for the sake of simplicity. vIn the devices shown in l41 ig. 1 to 5 inclusive ythe door that is locked 'is asliding door. VHowever, the invention can be applied as readily to a swinging door, and the form of the invention shown in Fig. 6 and 7 is particularly adapted .for swinging doors, but is also usefulwith sliding doors.

. In the form of the invention shown in Figs.- 6 and 7 the flexible member 36 is connected with one arm 79 of a bell crank lever 80 which is pivoted on the bracket 81 at 482, said bell crank lever being provided with an arm 83 having a pair of links 84 pivoted thereto to which is pivotedthe stop pin 85l which is adapted to extend through an opening 86V in the channeled member 87 extending across the top of the elevator door. rlhe pin 85 also extends through an opening 88 in the blocky 89 provided, on the bracket 81, said bracket 81 being secured to the hatch adjacent the door in any desired manner. The end of the lever arm 83 extending beyond the links 84 is provided with an opening 90 through which the eye-bolt 91 extends, said eye-bolt being engaged by the tension spring 92,-the other end of which is mounted in a recess 93 in an extension 94 on the bracket 81. The tension ofthe spring 92 can be adjusted byv means of the nut 95 provided on the eye-bolt 91, a locking nut 96 being also provided on said bolt.

An extension 97 is provided on the bell crank lever extending oppositely to the arm 83, said extension 97 being adapted to engage with a stop member 98 screwthreadedly engaging in the apertured lug 99 on the bracket 81, said member 98 being adjust-l able in said lug and being provided with a nut 100 for holding the same in adjusted position. The operating mechanism in this form of the invention is the same as that shown in Figs. 1 to 5 inclusive, and it will be seen that when theY roller 24 is engaged by the shoe .22l and the flexible member 36' is pulled to the left in Fig.' 6, the spring 92 will be tensionedand the bolt 85 will be withdrawn from the opening 86 permitting swinging of the door, j or sliding thereof, as the case may be, to open the same. When Vthe circuitisclosed and the solenoid is enel ergized, the shoe 22 will be Vwithdrawn from the roller 24 and the pull ontheV member 36 will be removed. The tension lspring 92 will then act to pull the bolt `85 downwardly and into engagement with the opening V86 locking the door against opening.

' Having thus described my invention, what I desirev to claim and secure by U. S. liet-1 .ters Patent isf l,

1. The l"combination with a door, of a door locking device, comprising a member engaging said door to hold said door against movement, means for holding said member sok in door engaging position and meansfor moving said member out of door engaging position when lthe elevator is opposite the floor at which saidk door is located and kthe operating current for said elevatoris cut off, said means comprising a lever pivotally mounted on said elevator intermediateV the ends thereof. y

' 2. The combination with a door, of a door locking device, comprising a member engaging said door to hold said door against movement, means for holding said, member in door engaging position and means for moving said member out of door engaging position when the elevator is opposite the floor at which said door is located and the operating current for said elevator is cut ofl", said means comprising a lever pivotally carried by said elevator'between the ends thereof and having a shoe'rigidly mounted on one end thereof.

3. The combination with a door, of a door i locking device, comprising va member engaging said door to holdsaid door against movement, means for holding said member Vin door engaging position and means for moving said member out of door engaging position when the elevator is opposite the floor at Which said door is located and the operating current for said elevatoris cut oif, vsaidmeans comprising a lever pivotally carried by said elevator between the ends thereof and having a shoevrigidly mounted on one end thereof, and means in the hatch! operav way with which said shoe engages tively connected with samemember.

4. In an elevator door lock, a member engaging the door to lock the same against movement, and means for moving said member out of'locking position, comprising a pivoted `levercarrie'dby the elevator, means operatively connected' with Vsaid member mounted in the elevatorvsliaft. a solenoid for holding said lever in a position lis? free-fof said/means When the'elevator operating. current is on, and means for swinging said'. lever. about itspivotv into vposition for the end thereof toeii-g-age. said means mount` ed in saidsha'ft. Y

nan elevator door look, a member ein gagging tlie door tol loek the same against movement, and` `means for moving j said member out oli loekingposition, comprising a pivotedf lever Carried bv the A elevator,

a. rol-ler operatively eoniieeted with saidV mem-ber mounted' in the elevatorl shaft, a'

solenoid-'for holdingfeaid lever out of rol-ler engaging position when the elevator operating eurrent ison, and.; means. ior swinging said'V lever about its pivot4 into roller en# gaging position, said solenoid and means being on one side off saidfpivot ands-a-id lever engaging said roller ontheothei' sidethereo't. k- Y 6. ,Infini `elevator. door' leek, a member engaging. the' vdoor to leek. the. same against movement, and; means,- i'or moving.. said member out of'tloeking. position`l` eompA ing pivoted lever carried by "the elevator, av roller. operativel7 connected with; said member mounted in the elevator sliatt, a solenoid for holding said lever out of, roller engaging position When the elevator operati.ng"o;urren-t is on', and spring means tor swinging said lever about its pivot'iiito-rol-ler engaging position., Y '7; in an; eleva-tor. door' look,I member engaging the door to lool; the same against movement means. for normally holdingl said member in looking position andl means Yfor moving. said member to unlocking position comprising a` lever mounted. ii'rthe elevator shaft-tV in,- predetermiiied relationship; to a door, roller.theref-)iiT a second levei pivotaliv mounted on vthe elevator. between4 'the ents thereof, a. shoe rigidly mounted'on one endV off said lever adapted(v toengage5L with said roller, means` for holding-said lever in roller engaging position., and means .adia- -Ceiit the other end oii said lever forl holdin said lever-out of roller engaging position when `the elevator .operating current on.,

l8.11m an elevator door look, amember en'-v gagiiig. ythe door to lock the same against movement, means for noiniallfyv holding. sai d .iiiembei'A in looking position and means vfor moving` said` member to unlocking` position' comprising a, lever mounted in .the elevator shaft in predetermined relationship to floor, a rol-ler thereon, aiiexible connection. between said member and said lever, a seeond lever ,pivotally mounted on the` elevator,A means for holding said secondl-ever in roller engaging position and means` for holdn ing said lever out of roller engaging posi.n `tion when the elevator operating. oui-rent is. on. v

9. in an elevator door look, a member euthe door to lock the sameagainst movement, springV means-for holding said member in looking. position, and vmea-ns aetiiig against. the tensionosa-id spring to move said member to"unlocking,v position,

comprising a lever, a 'flexible connection betweeir said lever and said member, a roller on said lever, a lever' on the eleva-torhavin-g a shoe rigidly mounted onrone end thereof, y

spring means for holding said lever in a positiony so that said` shoe will engage said roller, and means for holding said Vlever with said slioe out of roller engaging position.V

10. In an elevator door look, a memberengaging the door to look the same against movement, spring means for holding said member in'loekin-g position, and means ac-ting` against, the tension ofA said spring to move. said member to: unlockingposition, Comprising ay lever, a flexible connection betweenK sai d leverandsaid member, a roller on said lever, a lever on the elevator having a shoe. rigidly'mounted on.oneend'`.tli"e're'oi-7 spring means rorholding said lever in. a

position so thatv sai'dslioe will' engage said roller, and" a .solenoid energized by' the operating. current for liol'dingafsaid lever with said shoe: out of VVroller'engagiiig position.'

in witness whereof, l' hereunto subscribe my name thisV 7th, Adayr ot @et'o'ber' A. D., 

